The 41-year-old Wyoming Highway Patrol trooper now serving 10-15 years in prison for raping his then-girlfriend in 2021 does not get a new trial, the Wyoming Supreme Court ruled Friday.
Gabriel Lee Testermanâs claims that his case prosecutor and judge let his ex-girlfriend ramble about his character flaws before a jury were not enough to overcome his guilty verdict for first-degree sexual assault, the high court decided.
A Laramie County district court judge sentenced Testerman last May to 10-15 years in prison after a jury convicted him Feb. 1, 2024, of first-degree sexual assault for forcibly raping his ex-girlfriend three years earlier. Â Â
The jury opted not to convict Testerman on two more charges tied to claims he sexually assaulted another woman during a one-night stand in 2022.
The Dirt
On appeal, Testerman argued to the Wyoming Supreme Court that his ex-girlfriendâs testimony meandered and maligned his character before the jury.
Specifically, she said heâd discussed sexual themes in front of her children, heâd been part of a swingers club, he may have photographed her during sex against her wishes, heâd disclosed to her a past sexual trauma heâd suffered. He also said he kept âdirt on others,â heâd been married four times, hadnât treated women well and that his daughter had said she wanted to go home to her mother rather than stay with him.
Testerman also argued that the case prosecutor had âvouchedâ for the victim and other alleged victimâs believability, and that the alleged victim had been allowed to insinuate that he drove home drunk during their one-night stand.
Not only were each of these alleged errors ultimately harmless on their own, they didnât accumulate to render the trial unfair, the Wyoming Supreme Court ruled in a unanimous majority opinion written by Justice Robert Jarosh.
Neither the judge nor prosecutor violated his role, the opinion adds.
The Things She Said
On April 25, 2022, a woman drank with Testerman and went home with him. There, she took one or two sips from a drink he made her, then became dizzy and âperhaps blacked out,â according to her testimony.
She told the jury during Testermanâs trial that she woke later to him sexually assaulting her.
She gathered her belongings, left the home and reported the incident four days later.
Cheyenne Police Department Detective Nick Morgan reached out to Testermanâs former girlfriend during the investigation.
The ex-girlfriend said that in July 2021 while living with Testerman, she woke to find heâd forced her legs apart with a âspreader barâ and was raping her.
The ex-girlfriend told the jury that she didnât report the incident before being contacted by Morgan because she worried about humiliating her children, she feared Testermanâs influence in his law enforcement role and because heâd indicated he kept âdirt on people,â the opinion notes.
Their Relationship
Testerman told his girlfriend of 2021 that he had been married four times and hadnât treated women very well in the past, and that heâd suffered a past sexual trauma, according to her testimony.
The relationship fizzled that summer when Testerman had sexually-charged conversations in front of the girlfriendâs kids, she testified. Because heâd blindfold her during sex, she often worried he was photographing her, which was a âhard noâ for her, she added.
The rape happened July 31, 2021, after the pair attended a Cheyenne Frontier Days concert.
The girlfriend moved out one month later.
Around that time Testermanâs daughter kept saying she wanted to go home, and he wouldnât let her go home, the girlfriend had testified.
About That âNarrativeâ
The high court scrutinized whether some of the girlfriendâs claims simply made him look like a bad person and threw his trial.
They did not, Jarosh concluded in the order.
Those were Testermanâs reported statement heâd suffered a past sexual trauma, the ex-girlfriendâs claim heâd had sexualized conversations in front of the children, and the ex-girlfriendâs comment about his daughter.
As for the claims about Testermanâs daughter wanting to go home and Testerman having sexualized conversations in front of the children, that was a case of the witness meandering off the topic of the question the prosecutor asked her, the order says.
But in both cases, the judge stopped the woman from continuing with those stories once she strayed off topic. Also, these claims werenât the type that can prop up a rape claim, the order adds.
âMr. Testerman makes no cogent argument on appeal that the admission of these statements violated any clear and unequivocal rule of law,â Jarosh wrote. âIt did not.â
As for Testerman reportedly saying he suffered past sexual trauma, that wasnât a case of a prosecutor trying to make him look bad by pointing out past wrongs.
âIt is quite the opposite,â wrote Jarosh.
But Thatâs Why
The chatter about Testerman âkeeping dirtâ on others, about his ex-girlfriendâs worries of being photographed, about him and a past wife having been âswingers,â about him treating women badly, and about him driving after drinking didnât throw his trial either, the high court wrote â even though the state conceded on appeal that those claims painted a picture of him that went beyond the pre-approved trial evidence.
Testerman didnât object at trial to his ex-girlfriend talking about her fears of being photographed. In fact, he used her statements to challenge her truthfulness by getting her to admit during cross-examination that the investigation didnât reveal any photographs or videos of her.
As to the claim he kept âdirt on everyone,â the prosecutor didnât elicit that testimony or bring it up in his closing statement, and he used that evidence to explain to the jury why she didnât report the incident until approached by a detective. That didnât seem to sway the verdict, Jarosh wrote.
The Swinger
Testerman had argued that his ex-girlfriend rambling about his past âswingerâ habits was an attempt to splay his âunconventional sexual fetishesâ to the jury.
But Testermanâs swinger tendencies had already been deemed fair game at a pre-trial hearing, and Testerman hadnât argued that it was unfair evidence, the order says, adding that Testerman also testified about âpartner swappingâ at trial.
The implication in the order is that, if Testerman had thought evidence of his swinger ways would sway his trial, he would have argued that it was unfair when he had the chance and not told the jury about it in his own words.
Similarly, Testerman had also testified that heâd been married four times.
His ex-girlfriend had announced at trial that heâd mentioned he treated women poorly in the past, but when the judge told her to stay on topic, she didnât elaborate.
The woman with whom Testerman had had a one-night stand testified that heâd driven home after drinking.
That might be a âprior bad actâ of the kind for which a prosecutor needs pre-approval to expose at trial, but itâs not a consequential enough bad act to sway the verdict on a first-degree sexual assault charge, the order says.
Again, Testerman had testified of it himself as well.
Not Because Of #MeToo
During the rebuttal phase of his closing statement the prosecutor, Sweetwater County Attorney Danny Erramouspe, urged the jury to believe the womenâs account in the he-said-she-said case.
âHeâs got a dark side, and these women experienced it,â said Erramouspe. âThey opened the bedroom door for you , and they showed you what was going on. And because they do that, Iâm going to ask you real simple. Believe them. Just believe them. Not because theyâre women. Not because of hashtag MeToo. Not because of anything else, but because theyâre believable.â
Testerman didnât object to any portion of that rebuttal.
He argued on appeal that Erramouspe had committed prosecutorial misconduct by âvouchingâ for the witnesses.
He also argued Erramouspe had vouched for Morgan by saying the detective was âhonest, and spilled the beans.â
The high court disagreed, saying the whole context gives a fuller picture.
Erramouspe referenced the detective spilling the âbeansâ to note how the detective had been forthcoming about missteps in his own investigation. This wasnât a case of the prosecutor personally vouching for the detectiveâs character, the high court added.
When speaking of the women, the prosecutor noted how intimate were the details they had to divulge while answering questions on the stand. This was a comment on the evidenceâs credibility, not a personal vouching for the womenâs character, Jaroshâs order says.
Lastly, the order says, these little alleged errors donât add up to a mess capable of compromising the whole trial.
âThe testimony can be best understood as background related to either Mr. Testermanâs relationship with (his ex-girlfriend) or, in the case of drinking and driving, the events leading up to the (second alleged rape).â
These statements, largely unelicited meanderings by Testermanâs ex-girlfriend, were generally unrelated to each other and not directly tied to the crime of rape, Jarosh added.
Clair McFarland can be reached at clair@cowboystatedaily.com.





